During the Twelfth Five-Year Plan Period, the emergence of low-carbon, energy saving and new energy access into grid raises higher targets to a new period of power grid construction, and power grid planning will be confronted with more opportunities and challenges in future. This paper analyzed its status of power grid planning firstly, then stated the key problems which need to be solved in future planning, and proposed a new way which insists that power grid planning should be supported by scientific methods, take mechanism innovation as a breakthrough, and with a core of the transformation of management principles to strength coordination mechanism and dynamic management, to optimize the operating mode of power grid planning under the new conditions, so as to provide a new idea for planning and decision-making of grid corporations and other relevant departments.